Thread-guide for looms.



J. ROBINSON. THREAD GUIDE FOR LOOMS. APPLICATION FILED MAY 13, 1909.

Patented Dec. 14, 1909.

ll z'iiz eases:

JOSHUA ROBINSON, OF LAVJPJENCE, MASSACHUSETTS.

THREAD-GUIDE FOR LOOMEi.

Specification of Letters Patent.

Application filed May 13, 1909.

Patented Dec. 14;, 1909.

Serial No. 495,684.

To oZZ whom it may concern:

Be it known that I, JOSHUA ROBINSON, of Lawrence, county of Essex, tateof Massachusetts, have invented an Improvement in Thread-Guides forLooms, of which the following is a specification.

In the operation of looms it is customary to provide a number of extrathreads on the warp beam corresponding, ordinarily, to the number ofdifferent shades or colors of which the warp is composed, so thatwhenever a warp thread breaks and the broken ends cannot be broughttogether and connected, a corresponding extra thread will be carriedinto the warp, and the thread which was broken becomes an extra thread.The extra threads are usually provided at intervals, or in a singlebundle, on the warp beam, at the beginning of the operation, but in mostinstances it is necessary to draw a thread obliquely from the beam orwhiproll to the point at which the thread must enter the warp. Theobliquely entering thread causes a transverse pull on the adjacentthreads drawing them to one side of the positions in which they shouldbe held, thereby causing tight threads, in many in stances, causingdefects in the cloth produced. I/Vhen warp stop motion devices areemployed, which comprise a series of drop wires or forks which ride onthe threads, the transverse pull on a warp thread causes the adjacentdrop wires to be drawn closely together, so as to interfere with thefree action thereof, and thereby also frequently causing particularlyserious defects in the cloth.

The object of my invention is to provide means whereby threads may beled obliquely into the warp from the warp beam and so guided that saidthreads may be drawn approximately parallel to the other warp threads,as they enter the warp, said guiding operation being accomplishedwithout in any way interfering with the other threads of the warp. Iaccomplish this object by providing a transverse supporting bar, havinga series of sockets therein, in which guiding pins may be inserted atclifferent points, so that the thread may be caused to run about saidpins and the thread be drawn into the warp in the desired direction. Theparticular means which I preferably employ to accomplish said objectsare shown in the accompanying drawing, in which Figure 1 is a plan viewof one end portion of a loom provided with my invention. Fig. 2 is asectional view, on line 22 of Fig. 1.

As shown in the drawing, (6 indicates the warp beam, 7) the whip-rolland 0 the lease rods over and under which the warp threads pass as theyare drawn to the shed, and between which the drop wires or contact forks(Z are arranged to ride on the warp threads, in a manner well known inthe art.

According to my invention I provide a cross bar 6, which is rigidlymounted in the frame of the loom adjacent and in the rear of the leaserods and beneath the warp threads, as they run from the whip-roll to thelease rods, and in the upper edge of said bar I provide a series ofsockets 6, arranged as close together as is practicable. I furtherprovide a plurality of guide pins 7', which are adapted to fit in saidsockets and to be held therein in vertical position, said pins beingpreferably of stiff, smooth wire of small diameter, each being bent toform a handle 7 at one end and being pointed at its opposite end toenable it to be readily inserted in any one of said sockets, in whichposition it extends through the warp and a short distance thereabove.

With the above described device, when a warp thread breaks, acorresponding spare thread, as 9, must usually be taken from some placeon the warp beam not directly in line with the broken thread and drawnacross the warp to the point at which the break occurred. In employingmy invention one of the pins f is inserted through the warp in a socketof the bar a at a point in line wit-h the broken thread and the extrathread is drawn against and partly about this pin before it is drawninto the harness, so that, as it'passes from the pin into the harness,it will be drawn approximately parallel to the other threads, and therewill be no tendency to draw the adjacent threads and drop wires to oneside of their normal and desired positions. The broken thread thusbecomes an extra thread, as h, which may later be drawn into some otherpart of the warp, about another guide pin, as indicated in Fig. 1, orinto its proper place. Said bar 6 may be of soft wood, in which tersPatent is 1. In combination with a loom having a warp beam provided withextra threads, a support extending transversely of and beneath the warpas it is drawn forwardly from the warp beam, and one or more guide pinsadapted to extend through the warp and to be held in said support atdifferent longitudinal points therein, to provide guid ing means for anextra thread as it is drawn from points on the beam out of line withthreads adjacent the point at which it enters the warp, to cause it tobe drawn into the warp approximately parallel to the other threads,substantially as described.

2. In combination with a loom having a warp beam provided with extrathreads, a support extending transversely of and beneath the warp as itis drawn forwardly from the warp beam and having a series of socketsarranged therein at different longitudinal points, and guide pinsadapted to be removably supported in said sockets and to extend throughthe warp to provide guiding means for extra threads drawn from points onthe beam out of line with threads adjacent the points at which the extrathreads enter the warp and to cause said extra threads to be drawn intothe warp approximately parallel to the other threads, substantially asdescribed.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

JOSHUA ROBINSON.

Witnesses:

L. H. HARRIMAN, H. B. DAVIS.

